Matamorphosis/Bramble's Birthday Surprise Bramble adopts a caterpillar, curious to see it change into a butterfly. He worries that the caterpillar may need his help during the metamorphosis process, but Miss Olivia convinces him to just give it time. It's Brambles birthday, but nobody wants to hang out with him. Little does he know, his friends are planning a surprise birthday party for him.